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8690556 Rotary compressor and manufacturing method of the same  
There is disclosed a rotary compressor which delays a pressure rise on a high pressure chamber side in a cylinder of a rotary compression element to decrease a high pressure load applied to a...
8684473 Gear pump and gear pump for brake apparatus  
A gear pump includes: a drive shaft; a first gear; a second gear; a first plate disposed between the first gear and the second gear, and arranged to liquid-tightly seal the first surfaces of the...
8684714 Internal orbital engine  
An orbital engine with a first outer generally tubular body with a first axis, and a second generally tubular inner orbiter body with a second axis, the second inner body being moveable within the...
8684711 Powder metal scroll hub joint  
A scroll component including a spiral scroll wrap, a baseplate having a first major surface coupled to the scroll wrap and a second opposing major surface comprising a protruding pilot extending a...
8684712 Oil pump for a vehicle  
A plurality of convex portions that protrude radially outward from a plurality of positions separated in the circumferential direction are provided on the outer peripheral surface of a driven gear....
8684713 Rotor type pump  
A rotor type pump is provided. A rotor rotates and closely contacts an inner surface of a chamber, and a cam controls a sealing part, so that during a compression procedure, the sealing part, a...
8684702 Variable displacement pump  
A variable displacement oil pump for an automotive engine. The oil pump includes a cam ring accommodating thereinside a pump element having a rotor. The cam ring is swingingly movably accommodated...
8684710 Distributor assembly for two-speed gerotor device  
A distributor assembly (12) includes a distributor housing (102) and a valve selector plate (104). The distributor housing (102) includes an axial bore (106) extending in an axial direction through...
8684715 Vane machine  
A vane machine for expansion or compression of gases, air, engine exhaust, vapors or a mixture thereof, includes a housing with a cylindrical space having inlet and outlet ports, a shaft offset in...
8678795 Stator of a gerotor device and a method for manufacturing roller pockets in a stator of a gerotor device  
A method for manufacturing roller pockets in a stator of a gerotor device generally includes providing a stator having a cavity including a generally cylindrical section defining a central axis and...
8678798 Rotary pump device having seal mechanism which includes resin member and reinforcing ring in hollow portion of resin member  
A rotary pump device is provided in which a drive shaft is inserted into a center hole of a cylinder that forms rotor chambers, and into outer rotors and inner rotors of rotary pumps. In the rotary...
8678786 Scroll compressor with partial unloader for start-up  
A scroll compressor may be provided with a check valve interposed between a balance chamber and a discharge chamber. The check valve may allow balance chamber pressure to remain low during start-up...
8678774 Scroll compressor  
A scroll compressor is provided. A value obtained by multiplying a wrap height (H) by a driving speed (V) may be controlled to be within a range of approximately 500˜1000 mmHz at a low speed ...
8678796 Scroll-type compressor  
A scroll-type compressor whose capacity can be easily changed and with which an inconvenience can be prevented is provided. A scroll-type compressor includes a fixed scroll having a first...
8678030 Flow divider  
A filling flow divider for portioning a filling substance includes at least two divider elements operatively connected together, each including a stator having a main chamber, a rotor in the main...
8678797 Variable displacement scroll compressor having first and second compression chambers that communicate with each other  
A stationary base plate includes a sub-bypass hole, which communicates between a suction chamber and a first compression chamber, and a main bypass hole, which communicates between the suction...
8672646 Scroll compressor  
A scroll compressor has an electric motor portion, a compression mechanism portion connected to the electric motor portion, and an oil sump for lubricating oil in a sealed container and compresses...
8672655 Scroll compressor having a pass hole for preventing over-compression under a low load condition  
In a scroll compressor, a pass hole is formed at a position overlapping with a discharge sector of a discharge hole, where a sector for passing a refrigerant through the pass hole is overlapped...
8672656 Progressing cavity pump/motor  
A progressing cavity pump/motor (10) includes a stator housing (12), a polymeric layer (14), and a rotor (16). A plurality of axially extending grooves (24) are formed in the interior surface of...
8672658 Vane pump with improved rotor and vane extension ring  
A fluid vane pump having a housing with a generally cylindrically walled control volume with an inlet and outlet. A rotor is provided having a rotatable axis within the cylindrical wall control...
8671907 Split cycle variable capacity rotary spark ignition engine  
A split-cycle variable capacity rotary spark ignition engine system having at least a first rotary configuration (C1) including repetitively volume variable working chambers [60, 61, 62] for...
8672654 Shaft mounted counterweight, method and scroll compressor incorporating same  
A counterweight mounted to a drive shaft in a scroll compressor is provided. The drive shaft has a central annular segment generally concentric about the central axis and an eccentric annular...
8672657 Double gear pump with improved bearings  
In a double gear pump that is provided with a drive gear; two driven gears that are oppositely arranged with the drive gear therebetween, a first bearing that supports a drive shaft of the drive...
8672647 Water injected scroll air compressor  
A high reliability water injected scroll air compressor is provided with an orbiting scroll, a fixed scroll corresponding to the orbiting scroll, a motor that generates driving force for making the...
8672659 Vane air motor with prevention of leaking radial bearing grease  
A vane air motor is disclosed which is configured to prevent grease in a radial bearing from leaking into a rotor chamber. The vane air motor has a motor housing (20) having a rotor chamber, a...
8668479 Semi-hermetic scroll compressors, vacuum pumps, and expanders  
This gas equipment, for other than air, includes a fixed scroll and an orbiting scroll, each having fins upon their back surfaces. The orbiting scroll remains within a housing having fins that...
8667950 Oil-less rotary engine  
Method and apparatus for oil-less engine with a revolving rotor are shown. Oil-less engine allows manufacturers to build environmentally safer oil-free engines, with fewer engine parts and at...
8668480 Pre-pressurization pump liner for vane pump  
A vane liner for use in a vane pump has a vane liner body defining an inner bore for providing a cam surface in a vane pump. The cam surface has a suction opening formed through the body at one...
8668481 Pump assembly, in particular for helicopter lubrication  
A pump assembly, in particular for lubrication in helicopters, has a casing, the lateral wall of which defines an intake port and a delivery port; and the casing houses two rotary pumps powered by...
8668040 Supercharger-equipped internal combustion engine for saddle-ride type vehicle  
An internal combustion engine for a vehicle can include a crankcase, and a supercharger disposed behind the crankcase in a front-to-rear direction of the vehicle body. A throttle body and an...
8668478 Compressor having a shutdown valve  
A scroll compressor includes a discharge valve assembly having a valve member, a valve stop supported within the compressor shell and including an aperture there through and a communication member....
8662870 Integrated pump for compressible fluids  
A swash pump for compressible fluids uses sealing contacts made between the nutatable swash plate and the fixed cone plates to center and locate the inner swash sphere which slides against two...
8662869 Multi-stage dry pump  
A multi-stage dry pump includes: a plurality of pump chambers each including a cylinder and a rotor housed in the cylinder; a first rotor shaft that is a rotation shaft of the rotors; a fixed...
8662052 Rotary piston internal combustion engine power unit  
A power unit (14) which has a spark-ignition engine unit (1) of the Wankel type including a three flanked rotary piston (R) mounted on an eccentric shaft (63) rotating eccentrically within a cavity...
8657014 Artificial lift system and method for well  
An artificial lift system provides a lifting mechanism located in a well. The lifting mechanism communicates with a remote intake that is located below in the well. A compressed gas source provides...
8657592 Pumping apparatus with a hollow shaft acting as a valve  
A pumping apparatus includes a pump housing, a pumping member which is rotatable in the housing to pump fluid, the pumping member being provided on a support which is in use, driven, the housing...
8656888 Rotary internal combustion engine with variable volumetric compression ratio  
A method and apparatus for controlling an air input in a rotary engine, including selectively controlling inlet ports communicating with an internal combustion cavity of the engine, the ports...
8651844 Hybrid pump for delivering a liquid pump medium  
The invention relates to a hybrid pump for delivering a liquid pump medium, comprising a rotor consisting of substantially non-elastic plastic, which is situated in the pump chamber and can rotate...
8651842 Scroll compressor with opening/closing mechanism for the back pressure space  
A scroll compressor includes a high-pressure space capable of communicating with a discharge port and a back pressure space capable of communicating with an intermediate port. A fluid passage...
8651833 Combined gas and liquid pump  
The present invention provides a combined gas and liquid pump (46) for an internal combustion engine (10). The pump (46) includes a casing (58) having a cavity (60) containing a rotor (62) and a...
8651843 High efficiency fixed displacement vane pump  
A vane pump for an automatic transmission includes a housing which may be spaced from the axis of the transmission input shaft axis and driven by a chain or gear train driven by the torque...
8651841 Rotary compressor with improved connection  
Disclosed is a rotary compressor in which a connecting protrusion is formed at an inner circumferential surface of a vane chamber in which a connection tube is inserted, so as to increase a sealing...
8651839 ***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
Oil free screw compressor
 
A multi-stage oil-free screw compressor includes: a suction throttle valve for controlling air intake into the compressor; a piston assembly for operating the suction throttle valve; and a...
8651177 Long-lasting hydraulic seals for smart shuttles, for coiled tubing injectors, and for pipeline pigs  
A well conveyance apparatus for conveying equipment into a wellbore possessing long-lasting movable and slidable hydraulic seals against the interior of a borehole casing located within a wellbore...
8651825 Variable capacity vane pump with dual control chambers  
A variable capacity vane includes a pump control ring which is moveable to alter the capacity of the pump and the pump can be operated at either of at least two selected equilibrium pressures. The...
8647088 Rotary engine valving apparatus and method of operation therefor  
A rotary engine is described including: (1) a rotor located within a housing, the rotor configured with a plurality of rotor vane slots; (2) a vane separating an interior space between the rotor...
8649954 System for controlling the angular position of stator blades and method for optimizing said angular position  
A system for controlling angular position of stator blades including: a mechanism for calculating a set angular position of the blades according to one of speeds; and a module for correcting the...
8647086 Enclosed compressor  
An enclosed compressor includes a compression element configured to compress a working fluid, a casing and a fixing member. The casing has a substantially cylindrical shell plate and houses the...
8646274 Toroidal motor  
The present invention provides for a toroidal motor comprising a centrally located output shaft, a circular plate centrally and transversely affixed to the output shaft, a toroidal cylinder located...
8647085 Scroll fluid machine having a communication passage between an inner periphery of lip seal and an outer periphery of drive shaft or ring  
A scroll fluid machine with ensured reliability of an oil seal and a bearing even in a compressor operation at high rpm and high load is provided, which includes: a fixed scroll; an orbiting scroll...